Merge remote-tracking branch 'origin/dev' into feat/indieningen-kunnen-posten-en-bekijken-#194

# Conflicts:
#	frontend/src/queries/groups.ts
#	frontend/src/queries/submissions.ts

backend/src/routes/teacher-invitations.ts

@@ -5,7 +5,7 @@ import {
     getAllInvitationsHandler,
     getInvitationHandler,
     updateInvitationHandler,
-} from '../controllers/teacher-invitations';
+} from '../controllers/teacher-invitations.js';
 
 const router = express.Router({ mergeParams: true });